Vaporizer



INVENTOR ATTORNEYS L- H. CRITZER Aug. 2, 1955 VAPORIZER Filed Nov. 25, 1952 VAPORIZER Lyle H. Critzer, Pratt, Kans. Application November 25, 1952, Serial No. 322,528 1 Claim. (Cl. 219-19) inserticide, such, for instance, as Lindane into the atmosphere of poultry houses, and of an improvedtechnique of disinfecting poultry houses through vaporization of such insecticide.

An object of the invention is to provide an inexpensive, yet efiicient and safe, electrically heated vaporizer adapted to operate with ordinary lighting current. Another object is the provision of a vaporizer which readily may be conconstant.

According to the present invention, other inventive objects are realized by A perforated cover is also provided for the receptacle to assist in regulation of the rate of vaporization and to prevent non-intended access to the receptacle.

It has been found that the heat from a 7.5 watt light bulb, applied to crystalline Lindane supported in close proximity to the lamp, is sufiicient to generate, in the a poultry house or room having a volume of 20,000 cubic feet. The chemical Lindane is the gamma isomer of hexachlorocyclohexane of purity better than 99 per cent. Control of the rate of vaporizacover member. Thus, in the event a less than maximum output of insecticidal vapor is desired, a suitable proportion of the perforations can be closed, as by the application thereover of an adhesive strip, whereby to reduce the volume of vapor emanating from the device; or, the normal light bulb can be replaced by a light bulb of lesser heating value.

The device of the invention is also adapted to be In the accompanying drawings which illustrate a practical embodiment of my improved vaporizer:

Fig. 1 is view in side elevation;

Fig. 2 is an end view as seen from the right in Fig. 1;

Fig. 3 is a top plan view;

Fig. 4 is a view similar to Fig. 1 but with the vaporizer chamber shown in vertical longitudinal central section;

nitecl States Patent 55cc 2,714,649 l atented Aug. 2, 1955 Fig. 5 is a vertical transverse section taken on line 5 5 of Fig. 4, and

Fig. 6 is an end view of the receptacle element.

With reference now to the various views of the drawings or some other socket providing a end of the body member 10 includes a bulb socket 12 of the screw type A switch is preferably built into the body 1'0 energization of bulb 13 and is controlled by an actuating knob 14 which extends outwardly of the body. The switch (not shown) is of conventional construction and, as is well known, controls the electric circuit between the prongs 11 and bulb 13.

venience in positioning around bulb 13, the left end of the receptacle as viewed in Figs. 1

and 4 1ncludes a yoke Although various kinds of material may be placed in receptacle 15 to be vaporized the illustrated embodiment is particularly well suited solid crystalline insecticide heated passes first through the liquid phase and thence into the vapor phase.

In use, the vaporizer is other socket, a teaspoonful of the Lindane 24 is poured filamentary type produces a considerable amount of heat at approximately 200 P. which serves to convert the crystalline Lindane 24 into the vapor state, the vapor passing outwardly through the perforations and into the closed space to be disinfected, e. g. a poultry house. Lindane vapor kills insects in three difierent ways, (1) by contact with the vapor, (2) by breathing the vapor, and (3) by eating anything that has come in contact with the vapor. The rate of vaporization can be controlled either by using a This may be accomplished simply by closing ofi some of the perforations with adhesive tape.

The rate of vaporization is not so high as to require removal or poultry from the enclosure while the Inter is being disinfected. However the material itself is quite toxic and hence the cover 19 also serves to keep the poultry from picking at or eating the granules 24.

Electrical outlets are not always installed alike. Sometimes the slots which receive prongs 11 are found sideby-side on a wall and at other times one above the other. The design of the present construction is such that regardless of the manner in which the slots are arranged, the vaporizer can be so installed that receptacle 15 containing material 24 will always rest bottom down. This desirable feature stems from the fact that receptacle 15 can be rotated about its axis on the body 10 as explained above. If the solid material to be vaporized is one which sublimes, then the attitude of repose of the receptacle is of no consequence. However, if the solid material is one which passes through a liquid phase in the process of being vaporized, which is a customary condition, then it is important always to be able to so support the receptacle 15 that the liquefied material will not spill out and thus become wasted but rather will be collected in a pool at the bottom of the receptacle, from which pool vaporization can take place. The rotatable mounting of receptacle 15 makes the latter possible regardless of the angular disposition of the slots in the Wall socket into which prongs 11 are inserted.

Having now described my invention and illustrated one practical embodiment thereof, I claim:

In a vaporizer device adapted to be plugged into an electrical wall outlet, the combination comprising a body member, a pair of parallel spaced prongs extending outw'ardly at one end of said body member, a socket arranged at the other end of said body member adapted to receive a light bulb, electrical connections between said prongs and socket, said electrical connections including a switch device, an irnperforate cup-like receptacle adapted to receive the vaporizable material, a perforate cover for said receptacle, means securing said receptacle to said body member at the socket end thereof such that the light bulb will be disposed in said receptacle in spaced relation with respect to the latter and with its major axis substantially parallel to the major axis of said receptacle, and securing means comprising a yoke portion on said receptacle having opposed lugs engageable with a transverse peripheral groove in said body member, said cover also including a complemental yoke portion engageable with the groove in said body member, said securing means permitting relative rotation between said receptacle and body member, and means removably connecting said cover to said receptacle.

References Cited in the file of this patent UNITED STATES PATENTS 1,988,617 Adams Jan. 22, 1935 2,075,364 Smith Mar. 30, 1937 2,220,583 Schnebly et al. Nov. 5, 1940 2,435,756 Schlesinger Feb. 10, 1948 2,469,656 Lienert May 10, 1949 2,513,919 Costello July 4, 1950 2,595,306 Seaman May 6, 1952 2,611,068 Wellens Sept. 16, 1957. 

